Bag



May 7, 1963 H. T. BERVEN 35'088652 BAG Filed kNov. 4, 1960 United States Patent Oiilice ."LSSZ Patented May 7, 1963 3,088,652 BAG Harold T. Berven, Vancouver, Wash., assignor to Bemis Bro. Bag Company, St. Louis, Mo., a corporation of Missouri Filed Nov. 4, 1960, Ser. No. 67,201 14 Claims. (Cl. 229-56) This invention relates to bags, and more particularly to bags useful for containing products to be dispersed into water.

As is known, rotenone and other insecticidal materials are useful 'for poisoning lakes, ponds or other bodies of water to kill off undesirable or trash fish prior to restocking Iwith game iish. R-otenone and other products which may be used have the characteristic of losing their poisonous eifeet after a time to permit restocking. Among the several objects of this invention may be noted the provision of a bag adapted to hold rotenone or other poison sealed :against escape therefrom during shipment and which is also adapted to -be used as a dispersion bag to be towed through the water by a boat for dispers-ion of the poison in the water; the provision of a bag such as described in which the poison may be effectively sea-led against escape until the time of use, and which is then Ireadily lconvertible to a pervious condition t-o adapt it to be towed through the water to allow the poison to leach out into the water; and the provision of a lbag of this class which is of such construction las to be economical 'to manufacture. Other objects and features will be in part apparent land in part pointed out hereinafter.

The invention accordingly comprises the constructions hereinafter described, the scope of the invention being indicated in the following claims.

lIn the accompanying drawings, in which one of various possible embodiments of the invention is illustrated,

F-IG. l is a view in elevation showing a bag of this invention prior to being lled;

FIG. 2 is a -vertical section, partly broken away, taken on line 22 of FIG. 1;

FIG. 3 -is a horizontal section, partly broken away, taken on l-ine 3-3 of FIG. l;

FIG. 4 is 1a horizontal section, partly broken away, taken on line 4-4 of FIG. `1;

FIG. 5 is an enlarged seotion taken on line 5--5 of FIG. l;

FIG. 6 is a perspective showing the FIG. l bag as it appears when lled and closed, and prior to conversion for dispersion o-f the contents; and

FIG. 7 is a perspective of lthe FIG. 6 bag 'as it appears after conversion for dispersion.

Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.

Referring now to the drawings, a bag of this invention, designated by reference character 1 in its entirety, is shown to comprise an impervious upper portion 3 and a pervious lower portion '5 separated from each other by a c-losure 7. The upper portion 3 has a front wall 9 and a back ywall 11 joined along one side of the bag (the left side :as viewed in FIG. 1) by a `fold 13. At .the other side of 'the bag (the right `side as viewed -in FIG. l), the side edge of back wall 11 is folded over onto the side edges of front wall 9 and stitched along these overlapping side edges to -form side seam 15. The upper edges of the front wall 9 and back wall 11 are free thereby forming a mouth 117.

As shown in FIG. 3, front wall 9' and back wall 11 of upper portion 3 of the bag each consists of two plies, an outer ply =19 of burlap .and an inner ply 21 of paper laminated by means of la laminant such as a =latex-base adhesive to the inside face of outer ply 19'. As shown, inner ply 21 extends from the upper edge of the bag to just below closure 7 which separates the upper portion 3 from the lower portion 5 of ythe bag. Thus, while the burlap per se may be pervious, the upper portion 3 of the bag 1 with the paper inner ply or liner 21 is impervious. It will 'be understood that other means of rendering the upper portion 3 of the b-ag impervious may be employed. For example, the burlap of the upper portion of the bag may have an impervious coating applied thereto. It will be understood that pervious materials other than burlaJp may be used.

At the upper left and right yhand corners` of the upper portion 3, triangular shaped portions designated 23 and 25, respectively, are folded over onto the front wall 9 and secured in this position by `grommets y27 and 29, respectively, which extend through the double thickness of the Ifront wall 9 .and 'back wall 11. The openings 31 in the grommets 27 and 29 are :adapted .to receive lengths of cord or the like vfor towing the :bag behind a boat as will be described more fully hereinafter.

The lower .portion 5 of the bag 1 has a fron-t wall 33 constituted by an integral extension of front wall 9 of upper portion 3 and a black wall 35 constituted by integral extension of the back wall 11 o-f upper portion 3. Front wall 33 `and back wall 35 are joined along one side (the left side as viewed in FIG. 1) by a fold 37, which is a continuation of `fold 13. At the other side of t-he bag (the right side as viewed in FIG. 1), the side edge of back Wall 35 is folded over onto the side edge of front wall 33 and stitched along these overlapping side edges to form side seam 39 which constitutes a continuous extension of side seam 15. The bottom edges of front wall 33 and back ywall 35 vare stitched to form a bottom seam 41.

Since the front wall 33 and back wall 35 of lower portion 5 consist lonly of burlap, lower portion 5 of the bag is` pervious for escape of rotenone powder or other poison. While ,front wall 33 and back wall 35 may be of `any suitable pervious material, they are preferably formed of the same material as outer ply 19 of front wall 9 `and back wall-11 of upper portion 3, thus being integral extensions of the burlap of upper portion 3.

Closure 7 which separates the upper portion 3 from the lower portion 5 is located adjacent the bottom. of upper portion 3 of the bag. As shown, this closure is a rip-cord closure of the type shown in U.S. Patent 2,242,- 857 comprising a cord 43 of cotton -or other suitable materia-l stitched, yas by stitching 45, tnansversely across the entire width of the bag through the cord 43 and the front wall 9 and back Iwall 11 of the upper portion 3 of the bag. The cord 43 extends out beyond both sides of the bag as indicated rat 47 to permit `grasping of either end by the hand for ripping the stitching 45'.

In use, the upper portion 3 of the bag 1 is filled with a product, such as rotenone powder, through the mouth 17. The mouth of the bag is then closed by a suitable top closure 49 such as a folded tape 51 and stitching 53 (see FIG. 6). With closure 7 intact, the rotenone is sealed against escape in the upper impervious portion 3L of the bag. At the time of use, cord 43 is pulled to rip the stitching 45, thereby allowing the rotenone to drop down into the lower pervious portion 5 of the bag. Then, the bag may be towed in the water behind a boat by securing tow lines in grommets 27 and 29. The lower portion 5 of the bag being pervious, the rotenone will leach out into the water and poison tit.

It will be observed that the bag shown in FIG. 1 may be readily manufactured from a rectangular blank of burlap having a height corresponding to the total height of the bag and a width corresponding to twice the bag width to the upper portion of which is laminated a paper lply the height of which is less than that of the burlap. This blank is folded in half on heightwise fold line 13,

37, `searned at 15, 39, closed at the bottom by seam 41, and provided with rip-cord closure 7.

In view of lthe above, it will be -seen that the several objects of the invention are achieved and other advantageous results attained.

As various changes could bel made in the above const-ruotions without departing from the scope of the invention, it `is intended that all matter contained 'm the above description or shown in the accompanying drawings shall be interpreted as il'lustnative and not in a limiting sense.

I claim:

1. A bag comprising .an impervious upper portion and a pervious lower portion, and a closure adjacent the bottorn of the upper impervious portion, said closure being. removable Ito permit passage of contents from said upper portion to said previous lower portion.

2. A bag as lset forth in claim l wherein said closure is a stitched closure including a rip cord.

3. A bag 4as set forth in claim 2 having openings at the upper corners of said upper portion for receiving `lines for towing the bag behind a boa-t.

4. A bag comprising an impervious upper portion and a pewious lower portion, the wallsV of said upper portion consisting Iof a pervious layer and an impervious layer, and the walls of said lower portion being constituted by integral extensions of .said pervious layer of the upper portion, and a closure adjacent the bottom of the upper portion separating said upper portion from said lower portion, said closure being removable to permit passage of contents from said upper portion to :said lower portion.

5. A bag as set forth in claim 4 wherein said pervious Alayer is cloth and said impervious layer is paper.

6. A bag as set forth in claim 4 wherein said closure is a stitched closure including `a rip cord.

7. A bag as set forth in claim 6 having grommeted openings at the upper corners of said upper portion for receiving lines for towing the bag behind a boat.

8. A bag comprising a rectangular bag blank folded in half on a heightwise fold line and side-seamed at the side yopposite the fold and seamed at' the bottom, said blank having an impervious upper portion and a pervious lower portion, and a removable closure extending `across the bag above and adjacent the bottom of the impervious upper portion.

9. A bag as set forth in claim 8 wherein said closure .is a stitched closure including a rip cord.

10. A bag as` set for-th in claim 8 wherein said blank compri-ses pervious cloth, the upper portion of which has an impervious layer.

ll. A bag as set forth in claim l0` wherein the irnpervious layer is a paper layer laminated to the -inside of the cloth.

12. A bag as set forth in claim ll wherein said closure is a stitched closure including a rip cord.

13. A bag as -set forth in claim l2 having openings at the upper corners thereof for receiving lines for towing the bag behind a boat.

14. A bag as set forth in claim 13 wherein` the upper corners are turned over and have gromments therein providing said openings.

References Cited in the file of this patent UNITED STATES PATENTS 203,130 1Fischer Apr. 30, 1878' 2,349,672 Nielsen May 23, 1944 2,756,874 Erickson et al. July 3l, 1956 2,815,899 Swanson Dec. l0, 1957 

1. A BAG COMPRISING AN IMPERVIOUS UPPER PORTION AND A PERVIOUS LOWER PORTION, AND A CLOSURE ADJACENT THE BOTTOM OF THE UPPER IMPERVIOUS PORTION, SAID CLOSURE BEING REMOVABLE TO PERMIT PASSAGE OF CONTENTS FROM SAID UPPER PORTION OF SAID PREVIOUS LOWER PORTION. 